The most viral products are those that only work if they are shared. For example, Skype only worked in the early days if you got your friends on to Skype, otherwise you had no way to call them. If you have an application today, think about how you can make it social, where it would work better by sharing data with friends/co-workers. That provides a great incentive for customers to invite their friends/colleagues to use the application.
Although it would be nice to earn little bit of extra income without putting in any effort, you’re going to have to put in some effort at the beginning. First, you must be clear about why you want to earn passive income. Is it that you want to support your existing lavish shopping? Is it that you feel uncertain about the future and want to have alternative sources of income? Are you finding it hard to earn enough regular income to support your family and yourself, therefore you need extra passive income?
Writing an e-book is very popular among bloggers, as many have noted that “it's just a bunch of blog posts put together!” You will not only have to make an investment of time and energy to create the e-book, but market it correctly. However, if marketed correctly (through blogging affiliates in your niche, for example), you could have residual sales that last a very long time.
There are many comments about it being impossible to break into real estate with little money, or needing help from the bank of mommy and daddy. It is possible. I bought my first property, a multifamily, 6 months after graduating college, with a garbage job I got 3 months before and barely 7k in the bank. It’s now two years later and I’ve purchased a second this summer. Regarding management, I self-manage like most ‘small time’ landlords. Unless you own a massive apartment buidling, there’s no need to professional managment. Like another comment mentioned, I’ve only ever gotten heating issues or other minor things, for which I have a handyman to take care of. Aside from that, it’s fairly passive IMO. Dividend investing doesn’t require 100k either. It’s just an example the author used. I invest un securities with dividends ranging from 2-12%, and hedge/balance according to risk. Higher dividend % isn’t always better, but there are some good deals you can find. I think the key is to realize that you don’t need to stick to just one form of passive investment. Sure, 10 properties sounds daunting, and a $1M portfolio seems impossible, but you can combine both, as well as other passive income strategies. And ofc, the more risk you are willing to take on, the higher the potential reward (and loss). I day/swing trade, but wouldn’t advise this. It’s also not passive, I spend a massive amount of time researching and analyzing the technicals, but it’s worth it for now, as I’m fairly consistnet with profits. I have not tried blogging, and am not sure I’d be any good at it. I dabbled in ecommerce but found it was too time consuimg, but I know people who were able to quit their 9-5s from ecommerce. I’m sure no matter how much debt you have (i have 30k unsecured debt) or how little you think you make, there is a way to start investing today, even if it’s starting small.
For example, if you are married with a single income and have two school-aged children, your consumption requirements may be different as compared to a person who is single. Thus, identifying your stage of life will help you to clearly assess how much resources you need to put into the source which can generate enough passive income to support you.

The ultimate goal of marketers interested in creating successful viral marketing programs is to create viral messages that appeal to individuals with high social networking potential (SNP) and that have a high probability of being presented and spread by these individuals and their competitors in their communications with others in a short period of time.[9]